international trade flows, and the well-known - and traditionally presumed exogenous - "trade-cost elasticity" plays a central role …Gravity equations have been used for more than 50 years to estimate ex post the partial effects of trade costs on … in computing general equilibrium trade-flow and welfare effects of trade-cost changes. This paper addresses theoretically …

What has been the overall global welfare impact of the accession to the World Trade Organization of a large country … simple user-friendly formula to calculate the global welfare impact of the simultaneous trade liberalization of a number of … countries? How sensitive is the answer to the assumption of the trade model? We find a striking answer to these questions. We …

of terrorism, as well as internal and external conflict is equivalent to as much as a 30 percent tariff on trade. This is …We investigate the empirical impact of violence as compared to other trade impediments on trade flows. Our analysis is …

past free trade agreements (FTAs) as well as obtain ex ante predictions for the effects of future FTAs. We first identify … ante trade frictions. The effects of new FTAs are similarly weaker for pairs with existing agreements already in place. In … addition, we are able to relate asymmetries in FTA effects to each country's ability to influence the other's terms of trade …

We propose a short-run theory of the extensive margins of trade, comprising the standard international extensive margin …

international trade is the use of quantitative trade models to estimate the economic welfare losses from dissolutions of major … use state-of-the-art econometric methodology to estimate the partial (average treatment) effects on international trade … simulations will illustrate the important influence of trade costs - international and intranational - in contributing to the …